Escobar, like Vizquel a switch hitter from Venezuela, hasn’t received a lot of attention as a prospect because he has a .320 career on-base percentage with limited power, hitting .256 this season. Vizquel batted .263 in high Class A when he was 20. His fielding skills were so advanced, however, the Mariners brought him to the big leagues at 22, and he has gone on to play a record 2,681 games at shortstop. He’s a lifetime .273 hitter who once batted .333 and hit .295 in 2006, when he was 39. Some with the White Sox believe Escobar has that type of potential. “He struggled really badly the first two or three months this season and was terrific the last two months,” White Sox farm director Buddy Bell said. “That’s a great sign. But I don’t think we want to drop Omar Vizquel (comparisons) on him just yet.”